Lasting machine



O 1942- R. H. LAWSON 2, 93,3 0

LASTING MACHINE Filed Aug. 13, 1940 4 Sheets-Sheet 1 LASTING MACHINE Oct13, 1942. R. H. LAWSON LASTING MACHINE 4 Shee1; 5

Filed Aug. 13, 1940 & um 2 a r R. H. LAWSON 2,298,39 0

LASTING MACHINE Filed Aug. 13, 1940 4 Sheets-Sheet 4 v M: F

Patented Oct. 13, 1942 LASTING MACHINE Robert H. Lawson, Beverly, Mass.,assignor to United Shoe Machinery Corporation, Flemington, N. .L, acorporation of New Jersey Application August 13, 1940, Serial No.352,449

36 Claims.

This invention relates to'machines for use in the manufacture of shoesand is illustrated herein as embodied in a lasting machine.

It is an object of this invention to provide an improved side lastingmachine particularly adapted to operate on a prewelted shoe 'upper (thatis, a shoe upper to the lower marginal portion of which a strip ofwelting has been secured, for example by stitching, prior to the lastingoperation). to operate from the heel breast line to the tip line and isprovided with means for engaging the shoe upper along each side thereofto tension it heightwise of the last and to work its marginal portionalong each side thereof over the last bottom or insole usually supportedon the last bottom, and finally for adhesively securing the oppositemarginal portions of the'shoe upper, including the strip of welting, inlasted relation to the last and the insole by the application ofpressure thereto.

The illustrated machine is of the same general type as the lastingmachines disclosed in United States Letters Patent No. 1,854,204,granted April 19, 1932, and No. 1,963,170, granted'JunelQ, 1934,

both upon applications filed in my name. It should be understood,however, that many features of the invention are not limited in theirutility to embodiment in lasting machines of this type sincethey may beutilized to advantage in 1 other types of lasting machines and, indeed,in

machines for performing operations other'than.

lasting. The illustrated machine is constructed and arranged to operatesimultaneously upon the opposite sides of a shoe upper, and accordingly,

it is provided with'two individual operating units, hereinafter termedlasting units, for working the opposite sides of the shoe upper overthelast and for adhesively securing the marginal portions of the shoeupper in lasted relation to the insole and the last. The two lastingunits, in accordance with a feature of this invention, are springoperated to move yieldingly toward each other so as to tension theopposite sides of the shoe upper yieldingly over the last.

The illustrated machine, like the machines disclosed in theabove-mentioned patents, is provided with a jack arranged to receive thelast upon which are assembled the shoe upper and the insole, the jackserving to present the work to the lasting units and to move it pastthese units during the lasting operation so as to insure a continuouslyprogressive lasting of the opposite margins of the shoe upper. As in themachines disclosed in said patents, the jack is constructed Theillustrated machine is' arranged and arranged to control, in accordancewith the size of the, shoe mounted thereon, the setting of mechanismwhich determines the length or extent of the work feeding movement ofthe jack as well as the speed of that movement. Moreover, the samemechanism is instrumental in determining the initial spacing of thelasting units transversely of the shoe so that the lasting units arespaced apart in accordance with the width of the portion of the shoewhere the lasting operation is to begin. The. lengthwise or feedingmovement of the jack is, as in the prior machines, under the control ofa cam mechanismwith the distinction, howeveifl that in accordance withthe present invention the cam mechanism is constructed and arrangedtoimpart a continuous feeding movement to the jack.

It is to be noted also that the jack is mounted for rocking movementabout an axis parallel with and transverse tothe bottom of the last tomaintain the portion of the insole, adjacent towhich the lastingis-being-performed,-at all times in the same plane with relation to thelasting units, despite variations in the surface of the insole on thelast bottom.

In accordance with another feature ofthe invention each lasting unit isprovided with upper tensioning means'eng-aging-the-welt crease of aprewelted shoe upper for progressively working the shoe upper over thelast and, in particular, for progressively working the marginal portionof the shoe upper over the marginal portion of the insole, and withrotary pressing means for applying pressure to theoverlasted marginalportion of the upper or the strip of welting secured thereto forthepurpose of adhesively securing the marginal portion of the upper inlasted relation to the insole and the last.

While in the above and in the following specification reference is hadto an insole, it is to be understood that the invention is not limitedin its utility to the use of an insole and that the term insole may beconstrued to embrace other shoe bottom parts. Moreover, it is to beunderstood that in cases where the prewelted shoe upper is scant and thewelt is exclusively relied on to form the lasting allowance of theupper, the marginal portion of the shoe upper referred to hereinactually is the strip of welting which is secured to the marginalportion of the upper prior to the pulling-over and lasting operationsand hence is considered a part of the shoe upper.

With the above and other objects and features in view, the inventionwill now be described with reference to the accompanying drawings, whichillustrate a preferred embodiment of the invention, and pointed out inthe claims.

In the drawings,

Fig. l is a view in right-hand side elevation of a side lasting machinein which the present invention is embodied, with parts broken away toshow more clearly the construction thereof;

Fig. 2 is a view of a horizontal section taken below the head of themachine and with the top portion of the base broken away to show themechanism therebelow;

Fig. 3 is a plan view of the jack and parts of the mechanism forcontrolling the extent and rate of speed of the feeding movement of thejack;

Fig. 4 is a view of the head of themachine in left-hand side elevation;

Fig. 5 is a detail view, partly in section, of the two lasting units inengagement with the work :I and I Fig. 6 is aview of part of themechanism shown in Fig. 5 operating on a prewelted upper of diflerentconstruction.

General organization of the machine .The illustrated side lastingmachine is provided with a. box like base or frame 50 (Figs. 1 and 2)-carrying a head 52 (Fig. 1) which supports at the front of the machine apair of lasting units 54, 56 each' provided with means for working aprewelted shoe upper into lasted relation to a last and insole. Thelasting units are arranged simultaneously to engage the oppositemarginal portions of the upper to tension both sides of the upperheightwise of the last and to work the opposite marginal portions of theupper inwardly over the insole on the last. Beneath the lasting units54, 56 is a jack 58 connected by a universal joint to a support mountedfor movement in a direction substantially perpendicular tothe bottom ofthe shoe and supported by a carrier mounted for movement in a directionextending longitudinally of the shoe.

The work shown in Fig. 5 as operated on by the lasting units comprises ashoe upper U the lower marginal portion of which is engaged between andsecured to the split flaps of a flanged portion of a welt W, thisprewelted. upper being mounted on a last L'which carries the customaryinsole I.

In Fig. 6 there is illustrated a part of the lasting mechanism of thepresent machine as operating upon. the conventional type of preweltedshoe upper; The work illustrated in Fig. 6 comprises a shoe upper U, tothe lower marginal portion of which a flat piece of welting W has beenstitched with the inner edge of the welting flush with the edge of theupper. The prewelted upper U is mounted on a last L which carries aninsole I. The operations on the shoe uppers shown in Figs. 5 and 6 aresubstantially the same.

The lasting. units 54 and 56 are constructed and. arranged to movesimultaneously toward or from each other. Each unit is rotatable aboutan axis substantially perpendicular to the bottom of the last inoperative position but both units are irmnovable in vertical direction.The jack upon which is mounted the last L having assembled thereon theupper U is, as in the machines disclosed in the above-mentioned patents,yieldingly urged upwardly by' a spring (not shown) and means isprovided, hereinafter described, for imparting to the jack a continuouswork feeding movement to carry the last and shoe past the lasting units.

The lasting units and their operation As pointed out, the machine isprovided with a pair of lasting units for working the upper over thelast, that is, more specifically, for tensioning the opposite sides ofthe upper over the last and working the opposite marginal portions ofthe upper into lasted relation to the insole and the last and foradhesively securing these marginal portions in this lasted relation.Since both lasting units are similar in construction and arrangement itwill be sufficient to describe only one of them. As illustrated in Fig.5, each lasting unit comprises a cylindrical support IIO having at itslower extremity an outwardly extending flange H2 and carrying on itsupper extremity a clamping collar I I4. The cylindrical support H0 isreceived in a sleeve II6 which is part of a block provided withoppositely extending trunnions I20 and I22 (Figs. 4 and 5) rotatablymounted in the head 52 of the machine. The cylindrical support H0 isprovided in its middle. and lower portion with a recess I24 and in thisrecess is arranged a toggle comprising links I26, I20 pivotally joinedby a pin I30, the toggle serving the purpose of moving thecreaseengaging element of the lasting unit into operative position, aswill be described. One end of the toggle link I 28 is pivotally mountedon a pin I32 fixed in the support I I0. Also pivotally mounted on the.center pin I30 of the toggle is an upwardly extending rod I 34 which isactuated to make or break the toggle. The outer extremity of the togglelink I26 is pivotally secured to'the upper end of a rocker arm I36 whichis mounted. for rocking movement about a pin I38 fixed in the lowerportion of the support H0. The rocker arm is provided with a bore I40 inwhich is received a spindle I42 held in adjusted position lengthwise ofthe bore I40 by lock nuts I44 carried on the threaded upper end of thespindle I42. Secured to the lower end of the spindle is a disk I46having its periphery tapered in cross-section and adapted to be movedinto enga ement with the welt crease.

The lower portion of the cylindrical support IIO of each lasting unit isprovided with a recess I48 arranged at right angles to the recess I24through which extends, in a direction transversely of the last supportedon the jack, a pin I50 upon which is rotatably mounted a frustoconicalblock I52 provided atits smaller end with an annular groove ofsemicircular cross-section. Thi groove serves as a guide for a ring I54surrounding the block I52, the ring having a diameter substantiallylarger than the largest diameter of the frusto-conical block I52 andhaving a semicircular cross-section corresponding in size to that of theannular groove provided in the block l52. As will be seen, the ring I54is freely rotatable and is capable of tilting movements in oppositedirections transversely of the last supported on the jack for thepurpose of accommodating last bottoms of different slants and forapplying pressure upon the overlasted marginal portion of the upper,that is to say, the inwardly extending flange of the welt secured to theupper, so as to secure the upper in lasted relation to the last bycement. To prevent th ring I54, after-the removal of the work from themachine, from dropping so far that it would extend downward aconsiderable distance from the lowermost end of the lasting unit, adetent finger I56 is provided in the lower end of the support IIO, thefinger I56 serving to catch and hold the ring I54 in an elevatedposition when the work is removed from beneath the lasting units.

As already stated, the rod I34 serves to actuate the toggle I26, I28,the arrangement being such that in the extended position of the toggle,as illustrated in Fig. 5, the rocker arm I36 is so positioned that thedisk I46 is in its operative crease-engaging position in which it actson the upper to tension it over the last and lay its marginal portionover the marginal portion of the insole. When the toggle is broken, thedisk I46 is retracted into its inoperative position (Fig. 4).

For the purpose of simultaneously and uniformly operating the togglesI26, I28 of both lasting units the upper ends of both rods I34 areconnected by ball joints to the opposite ends of a lever I58 (Fig. 4)provided at its mid portion with both an upwardly extending lug and adownwardly extending lug. The lever I58, which may be considered anequalizing lever, is guided for straight up-and-down movement byparallel links, one of the links being an arm I60 fulcrumed at itslefthand end to the machine frame and pivotally connected at itsright-hand end to the upwardly extending lug of the lever I58. The otherparallel link is the right-hand arm of a lever I62 pivotally securedmidway between its ends to the machine frame in vertical alinement withthe fulcrum of the arm I60 and pivotally connected at its right-hand endto the downwardly extending lug of the lever I58. The left-hand end ofthe lever I62 is pivotally connected to a downwardly extending rod I64controlled by a spring I65 (Fig. 1) which tends to move'the rod into itselevated position and to depress the toggle operating rods I34 tostraighten the toggles I26, I28 thereby yieldingly moving the disks I46into crease-engaging positions. The lower end of the rod I64 isconnected to the forward end of a lever I66 (Figs. 1 and 2) carrying afollower roll which is held against a cam I68 (Fig. 1) by the springI65. The cam is so designed as to break the toggles I26, I 28 at the endof a lasting operation so as to move the disks I46 out of creaseengagingposition. The cam I68 is secured to a shaft I which corresponds to theshaft 480 of the above-mentioned Patent No. 1,963,170.

The mechanism for moving the lasting units inwardly and outwardly Forthe purpose of moving the lasting units 54, 56 inwardly and outwardlywith respect to and transversely of the last supported on the jack andpositioned in the machine in operative relation to the lastinginstrumentalities, the following mechanism is provided. Pivotallysecured at I12 (Fig. 4) to the inner lasting unit 56 is an arm I14having an enlarged upper end provided with gear teeth meshing withsimilar teeth provided on the lower end of an arm I16 which is rigidlysecured to the above-mentioned block II6 tiltable about the axes of thetrunnions I20 and I22. Pivotally mounted on the pin I12 is a link I18(Fig. 1) connected to the upper end of a short lever I80 pivoted midwaybetween its ends on a lug depending from the head 52. The lower end ofthe lever I80 is connected by a similar link I82 to the outer lastingunit 54. The arm- I14 is engaged by one end of a spring I84 (Figs. 1 and4) the other end of which is connected to one arm of a bell-crank-leverI 86 the other arm of which is connected to a downwardly extending rodI88.

As in the machines of the above-mentioned patents, the lower end of therod I88 is pivotally connected to a lever I90 carrying a follower rollwhich is held by the spring I84 against a cam I 92 mounted on the shaftI10.

scribed connections, both lasting units yieldingly toward each other asfar as permitted by the resistance of the work, to tension both sides ofthe upper yieldingly over the last. The cam I92 is designed to maintainthe tension of the spring I84 uniform and hence to maintain constant theforce which yieldingly moves the lasting units inwardly by compensatingfor any additional tensioning of the spring I84 caused by an increase inthe width of the work. Upon increase in the width of the work the twolasting units are spread apart and the right-hand end of the I springI84 is moved toward the right in Fig. 4. Consequently, the rod I88 willbe permitted to rise sufiiciently to let up on the spring so as tocompensate for the increase in the tension of the spring caused by theabove-mentioned movement of the right-hand end of the spring I84 towardthe right in Fig. 4. In particular when, during the continuous feedingof the work by the jack past the lasting units, the lasting operationpasses from the shank portion to the ball portion of the shoe, the camI92 will automatically cause the spring tension to be kept uniformregardless of the increased width of the work at that portion.

The mechanism for initially spacing the lasting units The lower end ofthe arm I14 is connected by a rod I96 (Fig. 4) to an arm I91 fixed onthe upper end of a vertical rockshaft I98 on the lower end of which issecured a similar arm 200 (Figs. 3 and 4). For the purpose of initiallyspacing both lasting units 54, 56 in accordance with the size of theshoe to be operated upon and, more particularly, in accordance with thewidth of the portion of the shoe where the lasting operation is about tobegin, the arm 200 is pivotally connected by a link 202 (Fig. 3) to atransversely sliding rod 204 carrying at its left-hand end (Fig. 3) acam roll 206 engaging the curved face 208 of a cam block secured to oneend of a lever 2I0 pivotally mounted on a fixed stud 2I2. The left-handend (Fig. 3) of the lever 2 I0 carries a roll 2 I4 engaged in aninclined cam groove provided in a cam member 2I6 fixed to a lever 2I8hereinafter termed a feed lever. This arrangement is similar to thecorresponding arrangement in the machines of said patents. As will beexplained, the feed lever 2I8 is moved into a predetermined positionprior to the initiation of each lasting operation in accordance with thesize of the shoe to be operated upon and this setting of the feed lever2I8 in turn determines, by means of the above-described connections, thespacing of the lasting units prior to initiation of the lastinoperation.

In order to insure that this mechanism for initially spacing the lastingunits is disconnected from the lasting units during the lastingoperation, a toggle 220, 222 (Fig. 3) is connected to the transverselysliding bar 204 and is actuated in a manner similar to that described inthe above-mentioned patents by a forwardly and rearwardly sliding rod224 carrying collars 225 and 228; the rod 224 correspondingsubstantially to the rod 910 of said Patent No. 1,963,170. Upon jackingof the shoe the rod 224, by reason of its forward movement in themachine which, as in the, machines of the above-mentioned patents,

The spring. I84 tends to move, by means of the above-de-.

occurs at that time, causes the toggle 228, 222 to be straightened andthe mechanism for initially spacing the lasting units to be renderedoperative. After the jackin of the shoe and immediately prior to theinitiation of the lasting operation, the rod 224 is caused to sliderearwardly in the machine under control of mechanism which may be, andpreferably is, of the type disclosed in the above-mentioned patents,thereby breaking the toggle 220, 222 due to the engagement of the collar228 with the toggle and disconnecting the mechanism for initiallyspacing the lasting units.

The mechanism for turning the lasting units Means which will now bedescribed is provided for turning the lasting units about axes extendingapproximately at right angles to the top surface of the insole of theshoe being operated upon, thereby maintaining the proper position of thelasting instrumentalities with relation to the curved edge of theinsole. As has already been pointed out, the lasting units are eachprovided with a cylindrical support IIB mounted in a sleeve H6, eachcylindrical support H0 having clamped to its upper end a collar H4. Eachcollar H4 is connected by a ball joint to a link 230 (Fig. 4) which inturn is connected by a ball joint 232 to a bell crank 234. The bellcrank 234 for the outer lasting unit 54 is connected by a rod 236 to anarm 244 secured to the upper end of a vertical shaft 248. The bell crank234 for the inner lasting unit 56 is connected by a rod 238 to an arm246 secured to the upper end of a vertical shaft 250. The rods 236 and238 are engaged by springs 240 and 242, respectively, which tend to movethe rods toward the left of Fig. 4 thereby to rotate both lasting unitsinto a predetermined relative position. The lower extremities of bothvertical shaft 248 and 250 are joined by connecting mechanism 252 (Fig.1), as in the machines of the above-mentioned patents, to the upper endsof two vertical shafts 254, 256. Secured to the lower ends of the shafts254 and 256 are arms 258 and 260 (Fig. 2) which are connected by rods262, 264 to levers 266, 268 fulcrumed on a shaft 210 corresponding tothe shaft 496 disclosed in the above-mentioned Patent No. 1,963,170. Thelever 266 is rigidly connected with a lever 212 (Fig. l) which carrieson its free extremity a cam roll engaging an appropriately formed cammember of a bank of pattern cams. Similarly, the lever 268 is rigidlyconnected to a lever 214 also carrying a follower roll at its freeextremity, the roll engaging another appropriately formed cam member ofthe same bank of pattern cams. These cams which actuate the levers 212,214 and the above-described mechanism connected thereto are of suchconfiguration as to turn the lasting units about their approximatelyvertical axes for the above-described purpose.-

The jack amd its operation As already stated, a jack 58 is provided tocarry the last L on which is assembled the shoe upper U and the insoleI. The jack 58 is the same in the construction and the arrangements ofits parts as the jack disclosed in the above-mentioned Patent No.1,963,170 and has heel and toe rests pivotally mounted so as to permit atipping movement of the shoe about an axis extending longitudinally ofthe shoe in substantially the plane of the sole. The jack 58 comprises aU-shaped upper portion having a pair of upwardly extending arms 280, 282(Fig. 3) and a downwardly extending spindle 284 (Fig. 1) connected to asliding support 286 by a universal joint, the support being mounted in acarrier 28! corresponding to the carrier 802 in said Patent No.1,963,170. The toe rest for the shoe comprises a suitably shaped block288 (Fig. 3) and the heel portion of the last is supported on a pin 290adapted to enter the usual thimble hole in that portion of the last,substantially as disclosed in the above-named patent. Moreover, thejack, as in the prior construction, is provided with a ball-shaped gage292 which is shifted in the longitudinal direction of the shoe uponjacking, the extent of the lateral shifting of the gage 292 dependingupon the size of the shoe to be operated upon. The ball-shaped gage 292is arranged to contact with a cam member 293 (Figs. 1 and- 3) secured tothe forward end of a Sliding rod 294, the forward and rearward movementsof which are controlled by mechanism which may be, and preferably is, ofthe type disclosed in the prior Letters Patent No. 1,854,204,hereinbefore mentioned. For the present purpose it is suflicient to notethat, after the shoe has been placed on the jack, the operator takeshold of the jack and swings it rearwardly, bringing the gage 292' intoposition underneath the cam member 293 and then permitting the jack torise under the influence of a spring (not shown) so that the gage 292may contact with the cam member 293. Since the position of the gage 292varies according to the length of the shoe on the jack, the position ofthe jack transversely of the machine, therefore, is determined inaccordance with the size of the shoe. The larger the shoe the furtherthe jack will be moved to the right.

The jack 58 of the illustrated machine is provided with shoe jacking andunjacking mechanism automatically actuated by a pulley 295 (Fig. 2)mounted at the upper end of the jack support 286 (Fig. 1) through auniversal joint and a shaft 296 (Fig. 2) extending upwardly through thejack spindle 284, the construction and operation of this mechanism beingthe same as that disclosed in said Patent No. 1,963,170. The pulley 295is rotated by a cable 298 which passes about the pulley 295, thencerearwardly and to the left, as shown in Fig. 2, and then downwardlyabout guide pulleys, one of these pulleys being secured to a weight 300.From the pulley secured to the Weight 300 the cable 298 passes upwardlyand is connected to a chain 302 (Fig. 2) which continues upwardly andpasses about fixed pulleys 304 and 306, thence laterally about a pair ofpulleys 308 carried by a lever 3 l 0 known as the fulcrum lever and thento the left to an anchorage on the previously-mentioned feed lever 2 l8which is fulcrumed to the rear left-hand side of the machine base 50.The other end of the cable 298 extends rearwardly and passes about aguide roll 312 mounted upon the end of a freely swinging arm 3l4 pivotedto the machine frame and then to the right about a large pulley (notshown) to which the end of the cable is secured. This pulley is mountedon a short shaft 3l8 and is rigidly connected with a spur gear 320 whichmeshes with a pinion (not shown) secured to a driven shaft 322'.

The pantograph mechanism For the purpose of imparting to the jack 58feeding movements of predetermined length and having a predeterminedrate of speed pantograph mechanism is provided, similar to thatdisclosed in the prior patents hereinbefore mentioned. The feed movementof the jack is brought about in a manner similar to that disclosed insaid patents by the following mechanism. The previouslymentioned feedlever 2 18 (Fig. 2) is connected at its forward end by a rod 338 (Figs.1 and 3) to a rearwardly extending arm 332 provided on the upper end ofthe arm 288 of the jack. Clockwise movement of the feed lever 218 aboutits fulcrum (as viewed in Figs. 2 and 3) causes a movement of the jack58 in the lengthwise direction of the shoe toward the left in Fig. 3,the jack being guided for such movement by means identical with thatdisclosed in the above-mentioned patents. For the purpose of impartingmovement to the feed lever 2 l 8 the latter is connected substantiallyintermediate between its ends by a link 334 (Fig. 2) to an arm 336fulcrumed at 331 to the rearward end of the previously-mentioned fulcrumlever 3H1 which is pivotally secured at its forward end to the machinebase. Fulcrumed on the pivot pin connecting the link 334 and the arm 336is one end of a link 338 the other end of which is connected to one armof a bell-crank lever 340 pivotally secured to the machine frame. Theother arm of the bell-crank lever 340 carries a follower roll 342 whichis held against a cam 344 by the action of the weight 308 on the cable298. The cam 344 produces the feed movement of the jack and hence may betermed a feed cam. It is mounted on a stationary shaft 346 whichcorresponds to the shaft 310 of the machine disclosed in Patent No.1,854,204 hereinbefore mentioned. The feed cam is of such configurationthat as it rotates, the feed lever 2l8 is moved continuously in aclockwise direction, as viewed in Figs. 2 and 3, with the result thatthe jack is caused to move the work continuously and at a uniform rateof speed past the lasting units.

It will be noted that by reason of the connection between the jack 58and the feed lever 218 established by the rod 330, the initial positionof the jack determined, as described, in accordance with the size of thework to be operated on causes a simultaneous initial positioning of thefeed lever 2I8 such that the extent of movement of the feed lever andhence the extent of work feeding movement of the jack depends upon thesize of the shoe to be operated upon.

Moreover, the illustrated machine is provided with means for determiningthe rate of speed of the feed movement of the jack in accordance withthe size of the work to be operated upon. As illustrated particularly inFig. 2 and as disclosed in the above-mentioned patents, the fulcrumlever 310 is connected at its rearward end to a rod 350 which is mountedfor longitudinal sliding movement in a sleeve 352 pivotally secured at354 midway between its ends to the machine frame. The sleeve carries apair of pivoted dogs 356 arranged, when swung in one direction, to clampthe rod 350 in the sleeve 352 and When swung in the other direction, torelease the rod 350 for sliding movement or adjustment along the sleeve352. The dogs 356 are normally held in position to clamp the rod 350 tothe sleeve 352 but are temporarily moved to releasing position when thejack is moved to operative position and before the power operation ofthe machine is started, so as to permit the relation of the rod 350 tothe sleeve 352 and consequently the positions of the fulcrum lever 310and'of the arm 336 to be varied according to the length of the shoe inthe jack. This varies the leverage of the interconnecting mechanismbetween the feed lever 218 and the bell crank 340 and consequentlyvaries the rate of speed of movement imparted to the feed lever 218 bythe bell crank 340.

For the purpose of clamping or releasing the rod 350in the sleeve 352the dogs 356 are connected to a bar 358 pivoted to a forwardly extendingsleeve 368 in which is housed a spring 362 bearing at its forward endagainst an internal shoulder formed at the end of the sleeve 360 and atits rearward end against a shoulder formed on a rod 364 which passesthrough the spring 362 and the sleeve 360 and which is pivoted at itsforward end to the right-hand end of a horizontal swinging lever 366fulcrumed to the top of the base 58 and connected intermediate its endsby a link 368 with the left-hand end of a lever 310 also fulcrumed tothe top of the base 50. While the machine is in operation the lever 316is held latched in the position shown in Fig. 2 by a spring-pressedlatch 312. When, however, the jack 58 is depressed in being moved intooperative position prior to the starting of the machine, the latch isreleased, as in the machines of the above-mentioned patents, by arelease mechanism which is actuated by mechanism for releasing a lockthat serves to hold the jack in its forward work-receiving position,permitting the rod 364 to move rearwardly, thereby releasing the tensionof the spring 362 and permitting rearward movement of the bar 358. Thiscauses a release of the dogs 356 and consequently a release of the rod358 from the .sleeve 352 and hence permits the fulcrum lever 310 and thearm 336 and the pivotal connection between the links 334 and 338 to moveto the position necessary for the operation upon the particular shoe inthe jack 58. This positioning of the parts is effected by the feed lever2 I 8 through the link 334, the feed lever itself being positioned aspreviously described. Thereupon, that is, after the initiation of thepower operation of the machine by the treadle, the dogs 356 are againoperated by a pin 316 on a treadle-controlled sliding bar 314 engagingthe lever 318 to clamp the rod 358 in the sleeve 352 so as to maintainthe position of adjustment of the fulcrum lever 3|!) and the arm 336.

7 Limiting outward movement o jack:

The illustrated machine is provided, as the machines disclosed in thepatents above mentioned, with means for limiting the forward or outwardmovement of the jack 58 into its Work-receiving position. To that endthe spindle 284 of the jack is connected by a universal joint with arearwardly extending rod 3811 (Figs. 1, 2 and 3) which is constructed,arranged and controlled as the corresponding rod 890 of the machinedisclosed in the above-mentioned Patent No. 1,854,204.

Jack lock The mechanism for tipping the shoe 8 In the illustratedmachine sliding movements of the jack carrier 281 to tip the shoe aboutan axis extending substantially parallel to the last bottom andtransversely thereof so as to maintain the bottom of the shoe in theproper plane longitudinally thereof are produced by means of connectionsoperating'from the pattern cam shaft 400 corresponding to the patterncam shaft 482 of the machine disclosed in Patent No. 1,963,170,hereinbefore mentioned. These connections comprise a chain 402 (Fig. 2)extending across the front of the machine and adjustably connected tothe carrier 281 of the jack. The chain .402 passes about a pulley 404pivoted to the forward end of one arm of a bell-crank lever 406 mountedon the shaft 210. The bell-crank lever 406 is provided with a rearwardlyextending arm carrying a cam roll arranged to engage one of the seriesof cams on the pattern cam shaft. From the pulley 404 the chain 402extends across the front of the machine and is secured to the base 50.It will be seen that the combined rotary and bodily movement of thepulley 404 in'a counterclockwise direction, as viewed in Fig, 2, willmove the carrier 281 of the jack a distance equal to twice the distanceof bodily movement of the pulley 404. The jack carrier 281 is moved inthe opposite direction by a chain 408 also secured to the carrier 281which is constructed and arranged as in the machine disclosed in theabove-mentioned patent No. 1,963,170. As in that machine, the chain 408passes about a pulley (not shown) secured to the base 50 and is fastenedto a horizontal spring (not shown).

The driving mechanism The power-operated parts of the machine areactuated by a driving mechanism which is similar to that fully describedin the Patent No. 1,854,204 above mentioned and which includes acontrolling device or stop motion for automatically stopping the machineafter a feeding movement of predetermined extent has been imparted tothe jack. The driving mechanism of the machine also includes means forreturning the various machine parts, and in particular the jack, totheir initial positions after the completion of a lasting operation.Moreover, the previously mentioned pattern cam shaft 400, which is partof the driving mechanism, is provided with a series of sets of cams asin the machines of the above-named Letters Patents to enable the machineto operate alternatively upon right and left shoes or upon shoes ofdifierent styles.

The operation of the machine In the operation of the machine, a lastsupporting an insole on its bottom and having a prewelted shoe upperassembled thereon is presented, bottom up, to the jack while the latterassumes its work-receiving forward position. The jacking of the last andshoe, which is effected automatically as in the machines of theabove-mentioned Letters Patent, causes a setting of the ball-shaped gage292 in a predetermined position in accordance with the size of the shoeto be operated upon. After the shoe has been jacked and firmly clampedin the jack, the operator depresses the jack against the pressure of theabove-mentioned spring (not shown) which tends to elevate the jack. Byreason of the depression of the jack the locking plate 382 is releasedas in the machines of the prior Letters Patents above mentioned, therebypermitting an inward or rearward movement of the jack beneath thelasting units. As soon as the jack is located beneath the lasting units,it is permitted to be raised by its spring so that the ball-shaped gage292 may cooperate with the cam member 293 in locating the jack in itspredetermined position in accordance with the size of the shoe, therebysimultaneously moving the feed lever 2I8 to its predetermined position,with the result that the pantograph mechanism is simultaneously set andthe two lasting units are initially spaced in accordance with the widthof the portion of the shoe where the lasting operation is about tobegin. It should be mentioned that as a result of the release of thelocking plate 382 the latch 312 is released so as to release the rod 350for longitudinal sliding movement and adjustment in the sleeve 352. Thework having been located in its proper working position and the machinehaving been set for operation on a shoe of the size and style presentedto the machine, the power operation of the machine is initiated by thedepression of the treadle, with the result that the pin 316 of thehorizontally sliding bar 314 causes the pantograph lock to be renderedactive so as to clamp the rod 350 in the sleeve 352 in its new positionof adjustment.

As a result of the initiation of the power operation of the machine thedisks I64 of the two lasting units are swung into their crease engagingpositions in which they are retained while the shoe is continuously fedpast the operating point. As described, the lasting units are yieldinglyurged inwardly toward each other to tension the upper over the last andare turned about axes substantially vertical to the upper surface of theinsole during the lasting operation to accommodate the varying contoursof the insole.

It is to be understood that prior to the initiation of the lastingoperation the marginal portion of the insole or the inner surface of themarginal portion of the upper (this being the inwardly extending flangeof the welt when using the shoe upper shown in Fig. 5) or both arecoated with a pressure-responsive cement such as latex so that themarginal portion of the shoe upper, after having been tensioned over thelast by the progressive action of the disks I46 and while being heldtensioned by the disks, is adhesively secured in lasted relation to theinsole as a result of the pressure applied by the annular pressingmember I54 to the overlasted marginal portion of the upper or the welt.The lasting operation is entirely automatic and is terminatedautomatically after a feeding movement of predetermined extent has beenimparted to the jack to move the work past the lasting units, whereuponthe power-operated parts of the machine, including the jack, areautomatically returned to their initial positions.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. A lasting machine having, in combination, means for working a shoeupper over a last simultaneously at opposite sides thereof, pressingmeans for adhesively securing opposite marginal portions of said upperin lasted relation to a sole member on the last, and means for movingsaid shoe upper and last past said upper working and pressing means.

2. A lasting machine having, in combination. means for progressivelyworking a shoe upper over a last simultaneously at opposite sidesthereof, pressing means for progressively and substantiallysimultaneously securing opposite marginal portions of said upperinlasted relation to said last by cement, and means for moving said shoeupper and last past said upper working and pressing means.

3. A lasting machine having, in combination, means for progressivelyWorking a shoe'upper over a last simultaneously at opposite sidesthereof between the heel breast line and the tip line of an insolesupported on said last, pressing means for progressively andsubstantially simultaneously securing opposite marginal portions of saidupper in lasted relation to said insole by cement, and means for movingsaid shoe upper and last past said upper working and pressing means.

4. A lasting machine having, in combination, means for progressivelytensioning a shoe upper over a last having an insole thereonsimultaneously at opposite sides of said last, progressively operatingmeans for adhesively securing opposite marginal portions of said upperin lasted relation to said insole by the application of rolling pressureto said marginal portions, and means for moving said shoe upper and lastpast said upper working and pressing means.

5. A lasting machine having, in combination, means for progressivelyworking a prewelted upper over a last supporting an insole, and meansfor progressively applying pressure along the inner edges of the welt onopposite sides of said last, thereby to cause the marginal portions ofsaid upper to adhere to said insole.

6. A lasting machine having, in combination, means for progressivelytensioning a prewelted upper over a last having an insole thereonsimultaneously at opposite sides of said last, and means forprogressively applying rolling pressure along the inner edges of thewelt on opposite sides of said last, thereby to cause the oppositemarginal portions of said upper to adhere to said insole. Y

7. A machine for side-lasting prewelted "shoes having, in combination,welt crease engaging means for progressively working said upper over alast, and means for adhesively securing 'the marginal portions of saidupper, including said welt, in lasted relation to said last by theapplication of pressure thereto.

8. A machine for side-lasting prewelted shoes having, in combination,progressively operating means for simultaneously tensioning oppositesides of a prewelted upper over a last, and means for progressively andsubstantially simultaneously securing opposite marginal portions of saidupper, including said welt, in lasted relation to said last by theapplication of pressure to said marginal portions.

9. A machine for side-lasting prewelted shoes having, in combination,progressively operating means for simultaneously tensioning oppositesides of a prewelted upper over a last having an insole thereon, therange of operation extending between the heel breast line and the tipline of said insole, and means for progressively and substantiallysimultaneously securing opposite marginal portions of said upper inlasted relation to said last by the application of rolling pressure tosaid marginal portions.

10. A lasting machine having, in combination, a work support, means forprogressively tensioning opposite sides of an upper over a last havingan insole thereon, means for progressively securing the oppositemarginal portions of said upper in lasted relation to said insole andlast by the application of pressure thereto, and automatically operatingmeans for causing relative movement of said upper tensioning means andWork support to feed the work.

11. A lasting machine having, in combination, means for simultaneouslytensioning opposite marginal portions of a shoe upper over a last havingan insole thereon, means for progressively applying pressure to saidmarginal portions to secure them adhesively in lasted relation to saidinsole, and means for supporting said upper and last, the last-namedmeans being constructed and arranged simultaneously to presentsuccessive parts of said marginal portions to said tensioning andpressure applying means.

12. A lasting machine having, in combination, means for simultaneouslytensioning opposite marginal portions of a 'shoe upper over a lasthaving an insole thereon, means for progressively applying rollingpressure to said marginal portions to secure them-adhesively in lastedrelation to said insole, a support for said last and upper, and meansfor moving said support in the longitudinal direction of a last thereon,thereby to present successive portions of said marginal portions to saidtensioning and pressure applying means.

13. A lasting machine having, in combination, means for engaging thewelt crease at opposite sides of a prewelted upper supported on a lasthaving an insole thereon, means for yieldingly moving said welt creaseengaging means inwardly over said insole to tension said upper over saidlast, and means for progressively pressing the opposite marginalportions of said upper against said insole to cause said marginalportions to adhere to said insole in lasted relation thereto.

14. A lasting machine having, in combination, means for progressivelyengaging successive portions of the welt crease at opposite sides of aprewelted upper supported on a last having an insole thereon, means foryieldingly moving said welt crease engaging means inwardly over saidinsole to tension said upper over said last, and means for progressivelypressing the opposite marginal portions of said upper against saidinsole to cause said marginal portions to adhere to said insole inlasted relation thereto,

15. A lasting machine having, in combination, a pair of rolls forcontinuously. engaging a shoe upper and for working it into lastedrelation to a last, means for adhesively securing the upper in saidlasted relation, and means for continuously moving said shoe upper andlast past said upper working and securing means.

16. A lasting machine having, in combination, a work support, means forprogressively engaging successive portions of the melt crease atopposite sides of a prewelted upper supported on a last having an insolethereon, means for yieldingly moving said welt crease engaging meansinwardly over said insole to tension said upper-over said last, meansfor progressively pressing the opposite marginal portions of saidupperagainst said insole to cause said marginal portions to adhere tosaid insole in lasted relation thereto, and automatically operatingmeans for causing relative movement of said upper tensioning means andwork support,

17. A lasting machine having, in combination, means for progressivelyengaging successive portions of the welt crease at opposite sides of aprewelted upper supported on a last having an insole thereon, means foryieldingly moving said welt crease engaging means inwardly over saidinsole to'tension saidupper over said last, means for progressivelypressing the opposite marginal portions of said upper against saidinsole to cause said marginal portions to adhere to said insole inlasted relation thereto, and automatic means for moving said upper andlast past said tensioning means.

18. A lasting machine having, in combination, a pair of lasting unitsfor progressively engaging successive portions of the welt crease atopposite sides of a prewelted upper supported on a last having an insolethereon, means for yieldingly moving said lasting units toward eachother to tension said upper over said last and to Work opposite marginalportions of said upper over said insole, and means for progressivelypressing said marginal portions of the upper against said insole tocause said marginal portions to adhere to said insole in lasted relationthereto.

19. A lasting machine having, in combination, a pair of lasting unitsfor progressively engaging successive portions of the welt crease atopposite sides of a prewelted upper supported on a last having an insolethereon, means for yieldingly moving said lasting units toward eachother to tension said upper over said last and ,to work oppositemarginal portions of said upper over said insole, and freely rotatablepressing means for progressively pressing said marginal portions of theupper against said insole .to cause said marginal portions ,to adhere tosaid insole .in lasted relation thereto.

20. A lasting machine having, in combination, a pair of lasting unitsfor progressively engaging successive portions of the welt crease atopposite sides of a prewelted upper supported on a last having an insolethereon, means for yieldingly moving said lasting units toward eachother to tension said upper over said lastand to work opposite marginalportions of said upper .over said insole, and rotary means including afreely rotatable annular pressing member for progressively pressing saidmarginal portions of the upper against said insole to cause saidmarginal portions to adhere to said insole in lasted relation thereto.

21. .A lasting machine having, in combination, a pair of lasting unitsfor progressively engaging successive portions of the welt crease atopposite sides of a prewelted upper supported on .a last having aninsole thereon,.means for yieldingly moving said lasting units towardeach other to tension said upper over said last and to work oppositemarginal portions of said upper over said insole, and rotary meansincluding a freely rotatable annular pressing member for progressivelypressin said marginal portions of the upper against said insole to causesaid marginal portions to adhere to said insole in lasted relationthereto, said annular member being mounted for tilting movementtransversely of the shoe for the purpose of accommodating shoe bottomsof different slants.

22. A lasting machine having, in combination, a pair of lasting unitsfor progressively engaging successive portions of the welt crease atopposite sides of a prewelted upper supported on a last having an insolethereon, means for yieldingly moving said lasting units toward eachother to tensionsaid upper over said last and to work opposite marginalportions of said upper over said insole, a rotary member for engagingthe welt surface opposite to that supported by eaohlasting unit, anannulargroove of semi-circular cross section in said rotary member, and,an annular pressing member guided for transverse tiltmg movement insaid groove to engage flatly shoe bottoms of various slants and to applypressure progressively to said marginal portions of the shoe upper tocause said marginal portions to adhere to said insole in lasted relationthereto.

23. A lasting machine having, in combination, means for tensioning ashoe upper over a last having an insole thereon, means for pressing themarginal portions of said upper against said insole to cause saidmarginal portions to adhere thereto, automatic work feeding means formoving said last and upper past said tensioning and pressing means, andmeans for determining the length of feed movement of said feeding meansin accordance with the size ofthe shoe being operated upon.

24. A lasting machine having, in combination, means for progressivelytensioning a shoe upper over a last having an insole thereon, means forprogressively and substantially simultaneously securing oppositemarginal portions of said upper in lasted relation to said insole by theapplication of pressure to said marginal portions, a support for saidlast, and means for automatically actuating said last support to movesaid last and shoe upper past said upper tensioning and securing means.

25. A lasting machine having, in combination, means for progressivelyand simultaneously tensioning opposite marginal portions of a shoe upperover a last having an insole thereon, means for progressively andsubstantially simultaneously securing said marginal portions in lastedrelation to said insole by the application of rolling pressure to saidmarginal portions, automatic work feeding means for moving said last andupper past said upper tensioning and securing means, and means fordetermining the length of feed movement of said feeding means inaccordance with the size of shoe being operated upon.

26. A lasting machine having, in combination, means for progressivelyand simultaneously tensioningopposite marginal portions of a shoe upperover a last having an insole thereon, means for progressively andsubstantially simultaneously securing said marginal portions in lastedrelation to said insole 'by the application of rolling pressure to saidmarginal portions, automatic work-feeding means for moving said last andupper past said upper-tensioning and securing means, and meansautomatically adjusted prior to the initiation of the lasting operationin accordance with the size of shoe to be operated upon to determine thelength of feed movement of said work-feeding means.

27. A lasting machine having, in combination, a pair of lasting unitsfor working oppositemar- 'ginal portions of a shoe upper over a lastsupporting an insole, means for pressing said marginalportions to causethem to adhere to said insole, means for imparting a feed movement -tosaid last and shoe upper past said lasting units, and means formaintaining said units at a proper .angle to the edge of the bottom ofsaid last.

28. A lasting machine having, in combination, 'a pair of shoe upperworking and pressing units, a jack arranged to present to said units apartially completed shoe comprising an upper and an insole assembledupon a last, means for causing said units to operate progressively alongopposite sides of the shoe to work the shoe upper over the last and toapply pressure to the opposite marginal portions of the upper so as tosecure said portions adhesively in lasted relation to the insole, ;and,means for making said units about axes substantially at right angles tothe bottom of the last so that the relation of the upper worksaid unitsto operate progressively and simultaneously at opposite sides of theshoe to work the shoe upper over the last and to apply pressure to theopposite marginal portions of the upper so as to secure said portionsadhesively in lasted relation to said insole, and means for rocking thejack about an axis substantially parallel to the bottom of said last andextending transversely thereof so as to present the shoe and last tosaid upper working and pressing instrumentalities with the portion ofthe insole to which the upper is about to be or is being secured alwaysin substantially the same plane.

30. A lasting machine, having, in combination, a jack, a pair of shoeupper working and pressing units arranged to work the shoe upper over alast carried by the jack and having an insole thereon and to secure themarginal portions of the upper in lasted relation to the insoleadhesively by the application of pressure to said marginal portions,means for moving the jack substantially lengthwise of the last carriedthereby to cause said units to operate progressively at opposite sidesof the shoe between the heel breast line and the tip line thereof, a camand connections from the cam to the jack arranged to rock the jack so asto maintain the angular relation of the units to the surface of theinsole adjacent thereto substantially constant while said units operateupon diiferent portions of the shoe.

31. A lasting machine having, in combination, a pair of shoe upperworking and pressing units arranged to tension the opposite sides of ashoe upper over a last and to secure the opposite marginal portions ofsaid upper adhesively in lasted position by the application of pressurethereto, a jack for said last, means connected to the jack for varyingthe initial spacing of the upper working and pressing units inaccordance with the size of the shoe in the jack including a memberarranged to be positioned in accordance with the size of the shoe in thejack prior to the starting of the lasting operation, connections betweensaid member and the said upper working and pressing units arranged toposition said units initially in accordance with the position of saidmember, and means for breaking the connections between said member andsaid upper working and pressing units after the latter have beeninitially positioned but before the starting of the lasting operation.

32. A lasting machine having, in combination, lasting means arranged tooperate in succession at points upon opposite sides of a shoe and spacedlengthwise of the sole of said shoe to work the shoe upper into lastedrelation to an insole and a last upon which said insole is mounted andto apply rolling pressure to opposite marginal portions of said shoeupper to secure the upper adhesively in lasted relation to the insoleand last, a jack arranged to present the shoe and last to said lastingmeans, means to move the jack substantially in the longitudinaldirection of the shoe as the lasting operation is performed, meanscontrolled by the length of the shoe in the jack to determine the speedof the feeding movement of the jack, means constructed and arranged toposition said lasting means prior to the starting of the lastingoperation in accordance with the Width of the part of the shoe at whichthe operation is first to be performed, said positioning means includingconnections to said means for controlling the speed of the feedingmovement of the jack, and means for rendering said connectionsinoperative after said lasting means have been positioned but before thestarting of the lasting operation.

33. A lasting machine having, in combination, a last support, meansarranged to operate progressively along opposite sides of a shoe upperto work the shoe upper over a last carried by said support, pressureapplying means associated with the above-named upper operating means forcausing opposite margins of said shoeupper to be secured adhesively inlasted relation to said last, and mechanism for actuating said lastsupport to move the shoe upper and last past said upper operating andpressing means and arranged to vary the speed of the feeding movement inaccordance with the size of the last carried by the support.

34. A lasting machine having, in combination, a last support, meansarranged to operate progressively along opposite sides of a shoe upperto work the shoe upper over a last carried by said support,pressure-applying means associated with the above-named upper operatingmeans for causing opposite margins of said shoe upper to be securedadhesively in lasted relation to said last, and mechanism for actuatingsaid last support to move the shoe upper and last past said upperoperating and pressing means and arranged to vary the extent and speedof the feeding movement in accordance with the size of the last carriedby the support.

35. A lasting machine having, in combination, a jack for supporting alast having a shoe upper and an insole assembled thereon, a pair ofsupports, upper tensioning and securing units rotatably mounted on saidsupports and operating progressively on opposite sides of said last towork opposite marginal portions of said shoe upper into lasted relationto the insole and the last and to apply rolling pressure to saidmarginal portions to cause the upper to be secured adhesively in lastedposition, means for actuating the jack arranged to move the jack at auniform rate of speed past said units, and means operating in timedrelation to said jack actuating means for turning said units relativelyto said supports so as to maintain the relation of the units to the edgeof the insole uniform as the point of operation of the units istransferred along the shoe.

36. A lasting machine having, in combination, a support for a lasthaving a shoe upper and an insole positioned thereon, upper lastingmechanism cooperating with said support to tension the upper about thelast and to secure it in lasted relation to said insole and last, meansfor continuously moving the support past said lasting mechanism, andmeans operating in timed relation to said support moving means forrendering said lasting means inoperative.

ROBERT H. LAWSON.

